Home / 13,621.25-20,459.90-8,947.91

Finding the Fourth Proportional to 13,621.25, 20,459.90 and 8,947.91

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Solution

The fourth proportional to 13,621.25, 20,459.90 and 8,947.91 is: 13,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.25 : 20,459.90 = 8,947.91 : x
  2. Step 2: Convert to fraction form
    13,621.25/20,459.90 = 8,947.91/x
  3. Step 3: Cross multiply
    13,621.25x = 20,459.90 × 8,947.91
  4. Step 4: Simplify right side
    13,621.25x = 183,073,229.43
  5. Step 5: Solve for x
    x = 183,073,229.43/13,621.25
  6. Step 6: Final answer
    x = 13,440.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.